<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			button{
				width: 50px;
				height: 30px;
				border-style: hidden;
			}
		</style>
	</head>
	<body>
		<button >按钮</button>
	</body>
</html>
